appendicularia

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appendicularia

or

tadpole larva

the larva of a tunicate (ASCIDIACEA). It possesses a tail, NOTOCHORD and tubular nerve cord, and is indicative of the evolutionary relationships of the adults.
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Other occurring taxa included Cnidaria, Cladocera, Ostracoda, Amphipoda, Mysidacea, Pteropoda, Larvacea, and Chaetognatha were represented by a small number of species (Table IV), contributed collectively 19.68% and about 1% of the species richness and total abundance, respectively.
The relative numbers of ostracods and larvacea reflect the observations of Longhurst et al.
Asimismo, los quetognatos son incorrectamente identificados como larvacea. Di Mauro et al.